Finding the Third Proportional to 30,720 and 45,064

Step by Step Solution

1. Step 1: Write the proportion equation
   30,720 : 45,064 = 45,064 : x
2. Step 2: Convert to fraction form
   30,720/45,064 = 45,064/x
3. Step 3: Cross multiply
   30,720x = 45,064 × 45,064
4. Step 4: Simplify right side
   30,720x = 2,030,764,096
5. Step 5: Solve for x
   x = 2,030,764,096/30,720
6. Step 6: Final answer
   x = 66,105.60